This is going to depend on what kind of athletes you are talking about. High School athletes are usually offered an insurance program that is very inexpensive, and so are players in programs such as Little League. Don't assume the school will pay for everything for you.
Collective nouns for athletes are a team of athletes or a field of athletes.
The coach chooses the athletes for the team.
There are 184 athletes in the Dutch (Netherlands) olympic team
12 athletes
Olympic teams are limited to four athletes per team.
267 athletes
332 athletes
WHAT IS A GROUP OF ATHLETES CALLED
No
Football
Siam
27